page 13 wrote:You must exercise discretion if the applicant:
is suffering from a long term illness or disability that severely restricts their ability to learn English or prepare for the Life in the UK test, or
has a mental condition and is not able to speak or learn the relevant language.
Other physical conditions may prevent an applicant from meeting the requirement. You must consider how the condition would stop the applicant from taking the Life in the UK test or learning English. Each application must be considered on its own merits. For example, discretion may be appropriate where an applicant:
is deaf
is a person without speech, or
has a speech impediment which limits their ability to communicate in the relevant
language but this will depend on the facts in each case including whether the applicant is a national of a majority English speaking country.
Life in the UK test centres and many colleges can cater for a variety of disabilities, such as blindness. An applicant may be able to do the test even if they produce evidence of a disability.
If an applicant claims to have a physical or mental condition, they must provide original and current medical evidence from a medical practitioner. This must state the condition, and explain why it is unreasonable to expect the applicant to take the Life in the UK test or learn English.